Antonia Lottner (; born 13 August 1996) is a German former tennis player.
Lottner won seven singles titles and six doubles titles on the ITF Women's Circuit. In June 2018, she reached her best singles ranking of world No. 128. In April 2015, she peaked at No. 131 in the doubles rankings.
In June 2017, Lottner won her first WTA Tour match in s-Hertogenbosch, Netherlands. As a qualifier she upset then-world No. 6, Dominika Cibulková, in the first round.
Only results in WTA Tour and Grand Slam tournaments main-draw, Olympic Games and Fed Cup are included in winâÂÂloss records.